540656 has 10 divisors (see below), whose sum is σ = 1047552. Its totient is φ = 270320.

The previous prime is 540629. The next prime is 540677. The reversal of 540656 is 656045.

It is a congruent number.

It is an unprimeable number.

540656 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16880 + ... + 16911.

2⁵⁴⁰⁶⁵⁶ is an apocalyptic number.

It is an amenable number.

540656 is a deficient number, since it is larger than the sum of its proper divisors (506896).

540656 is a wasteful number, since it uses less digits than its factorization.

540656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33799 (or 33793 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 540656 is about 735.2931388229. The cubic root of 540656 is about 81.4654903013.

The spelling of 540656 in words is "five hundred forty thousand, six hundred fifty-six".